Disposable test tube rack



FIG.1 is a perspective view showing the front and top of the disposable test tube rack, showing our new design;

FIG. 2 is a another perspective view showing the bottom and front view looking upwardly into disposable test tube rack thereof;

FIG. 3 is an end side view thereof, taken from the left side of FIG. 1;

FIG. 4 is an end side view thereof, taken from the right side of FIG. 1;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a top view thereof. 

The ornamental design for a disposable test tube rack, as shown and described herein. 